HIGH STRENGTH GEOPOLYMERS PRODUCED FROM COAL COMBUSTION FLY ASH

被引：0
|
作者：
Nugteren, H. W. [1 ]
Butselaar-Orthlieb, V. C. L. [2 ]
Izquierd, M. [3 ]
机构：
[1] Delft Univ Technol, Dept Chem Engn, Sect Prod & Proc Engn, NL-2628 BL Delft, Netherlands
[2] Delft Univ Technol, Dept Chem Engn, Sect NanoStruct Mat, NL-2628 BL Delft, Netherlands
[3] CSIC, Inst Earth Sci Jaume Almera, E-08028 Barcelona, Spain
来源：
GLOBAL NEST JOURNAL | 2009年 / 11卷 / 02期
关键词：
fly ash; geopolymer; compressive strength; workability; particle size;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
High strength geopolymers were produced from coal combustion fly ashes. These matrices reached compressive strength values over 100 MPa, much stronger and denser than obtained by using Portland Cement binders. Size fractions were obtained by size separation techniques and the relationship between strength and particle size was investigated. The differences in compressive strength measured in the geopolymers made from fine fractions, the original fly ash and a coarse fraction of the same ash, were not significantly higher than the variation found for a reference geopolymer material. Therefore, a direct size-strength relationship could not be proven. Moreover, the chemistry and the pH of the fractions also varied, and this might as well has played a role in the strength development.
引用
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页码：155 / 161
页数：7
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